import {z} from 'zod'

export type EtaImo = number;

export type EtaMmsi = number;

export type EtaSpeed = number;

export type EtaVessel = {imo?: EtaImo | undefined, mmsi?: EtaMmsi | undefined, speed?: EtaSpeed | undefined};

export type DepartureDate = string;

export type DeparturePortCode = string;

export type EtaDeparture = {date?: DepartureDate | undefined, portCode?: DeparturePortCode | undefined};

export type ArrivalPortCode = string;

export type EtaArrival = {portCode: ArrivalPortCode};

export type EtaRequest = {vessel: EtaVessel, departure?: EtaDeparture | undefined, arrival: EtaArrival};

export type CreateApiComputeEtaArgs = {body: EtaRequest};

export type CreateApiComputeEtaOptions = {baseUrl?: string | undefined, ApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const etaArrivalTime = z.string();

export const etaImo = z.number().int();

export const etaMmsi = z.number().int();

export const etaSpeed = z.number().gte(0).lte(25);

export const etaVessel = z.object({imo: etaImo.optional(), mmsi: etaMmsi.optional(), speed: etaSpeed.optional()});

export const departureDate = z.string();

export const departurePortCode = z.string();

export const etaDeparture = z.object({date: departureDate.optional(), portCode: departurePortCode.optional()});

export const arrivalPortCode = z.string();

export const etaArrival = z.object({portCode: arrivalPortCode});

export const etaConfidence = z.number().int().gte(1).lte(5);

export const etaRemainingTime = z.number();

export const etaErrorMarginValue = z.number();

export const etaRemainingDistance = z.number();

export const etaResponse = z.object({arrivalTime: etaArrivalTime, vessel: etaVessel, departure: etaDeparture.optional(), arrival: etaArrival, confidence: etaConfidence, remainingTime: etaRemainingTime.optional(), errorMarginValue: etaErrorMarginValue.optional(), remainingDistance: etaRemainingDistance.optional()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * ETA computation
 * 
 * POST /compute-eta
 */
export const createApiComputeEta = async (args: CreateApiComputeEtaArgs, options?: CreateApiComputeEtaOptions) => {
const {baseUrl = "https://api.sinay.ai/etac/api/v1", fetch: fetchFn = fetch, ApiKey} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('content-type', "application/json")
headers.set('accept', "application/json")

if (ApiKey !== undefined) headers.set("API_KEY", ApiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/compute-eta${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(etaResponse, await res.json())
};